CN206280328U - Load charger - Google Patents
Load charger Download PDFInfo
- Publication number
- CN206280328U CN206280328U CN201621314128.6U CN201621314128U CN206280328U CN 206280328 U CN206280328 U CN 206280328U CN 201621314128 U CN201621314128 U CN 201621314128U CN 206280328 U CN206280328 U CN 206280328U
- Authority
- CN
- China
- Prior art keywords
- elastomer
- force snesor
- loading
- force
- snib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The application is related to a kind of load charger, including loading main body and force snesor, the force snesor is connected with the loading main body, wherein, the loading main body is force application part, the force snesor is used to detect the size of the loading main body force, and the force snesor is designed as axially longer column, and one part is arranged on the loading body interior.So force snesor only has part to be exposed at the outside of loading main body, has reached and can guarantee that the size of force snesor meets required precision, and does not increase the overall volume of equipment, not the technique effect of the stability of influence power system.
Description
Technical field
The utility model is related to field of measuring technique, more particularly to a kind of load charger.
Background technology
In the heavy load equipment for needing height output force value, high accuracy, pressure maintaining performance good, generally using hydraulic jack
Used as force application apparatus, its advantage is that simple structure, output force value can be adjusted with the height of hydraulic oil pressure in oil cylinder, pressurize
The relative lasting accuracy of energy is high.Such as bridge static loading test machine, large tonnage pressing machine and bridge stretching machine etc..The output of hydraulic jack
Force value is obtained various methods, and one, cylinder efficient section X hydraulic oil pressures intensity values=output force value.This method is because be to calculate
Value, uncontrollable factor is a lot, and error is larger, it is impossible to meet the requirement of high accuracy force value output.2nd, force snesor and oil cylinder string
Connect, will force snesor be arranged on oil cylinder front end or rear end, direct measurement and feedback oil cylinder produce output force value, can subtract
The generation of few error, realizes intelligentized control method, but large-tonnage force snesor requires that very high, volume is big to elastomer, installed in knot
There are many difficulties on structure.
It is first-selected, and high using great force value force snesor is concatenated in power system in the power output equipment for realizing Based Intelligent Control
Precision great force value sensor physical dimension is very big (more than 1000KN's), and particularly axially size must is fulfilled for requiring, Cai Nengda
To design accuracy.The length and diameter ratio of the effective workspace of elastomer of high accuracy column sensor are more than 2, i.e. L/d>2
Required precision could be met, but if axial length is long, bad stability in a compressed state.Such as limiting axial dimension will
Ask, sensor can only reduce length and diameter ratio, so greatly reduce the precision of sensor, also relatively be difficult to reach use and want
Ask.To realize Based Intelligent Control, fastened in the power of force application apparatus and directly seal in great force value force snesor, not only increase equipment
Size also reduces the stability of power system, and because the limitation of hollow of equipment, and great force value sensor has sealed in many inconvenience.
Utility model content
In view of this, the purpose of this utility model is to provide one kind not reduce below force snesor precise manner
Just the load charger that installation, pressured state are stablized.
The load charger that the utility model is provided, including loading main body and force snesor, the force snesor and institute
Loading main body is stated to be connected, wherein, the loading main body is force application part, and the force snesor is used to detect the loading main body
The size of force a, part for the force snesor is arranged on the loading body interior.
Preferably, the loading main body is hydraulic cylinder, and the hydraulic cylinder includes cylinder body and piston, and the piston includes piston
Body and piston rod, set fluted in the free end of the piston rod, and the part of the force snesor is arranged on described recessed
In groove.
Preferably, the force snesor is axially longer column sensor, the lower surface of the column sensor
Bottom land with the groove is contacted.
Preferably, the force snesor includes elastomer and loading pad, and the loading pad is arranged on one end of elastomer；Institute
The one end and the elastomer for stating loading pad coordinate, and other end is load force side.
Preferably, the elastomer is column, including first end and the second relative end set in the first end of elastomer
Be equipped with the first mating surface, the contact jaw of loading pad and the first mating surface be provided with the second mating surface, first mating surface and
Second mating surface is mating spherical surfaces.
Preferably, the through hole of elastomer axial direction described in insertion is formed with the axis of the elastomer.
Preferably, the end of the elastomer first end is provided with fixed structure in the through hole.
Preferably, position corresponding with the through hole is provided with patchhole in the loading pad；
The fixed structure includes snib and card；
The snib includes the snib head and snib post that are connected with each other, and the diameter of the patchhole is straight with the snib post
Footpath matches, and the snib head and card are located in the through hole, and the snib post is by inserting the insertion after the card
In hole.
Preferably, it is interference fits between the snib head and patchhole, and/or, it is tight between the card and through hole
Coordinate.
Preferably, it is provided with positioner between the force snesor and piston rod.
Preferably, the location hole relative with the through hole, the positioner bag are offered on the bottom land of the groove
Locating dowel is included, a part for the locating dowel is located in the location hole, and a part is located in the through hole.
Preferably, the position of notch is provided with supporting construction in the groove.
Preferably, adapter is provided with the side wall of the part for exposing the groove in the force snesor.
Preferably, it is provided with displacement transducer on the adapter.
In the application, a part for force snesor is arranged on the loading body interior, is only partly exposed at loading master
The outside of body, has reached and can guarantee that the size of force snesor meets required precision, and does not increase the overall volume of equipment, not shadow
Ring the technique effect of the stability of power system.
Brief description of the drawings
By description referring to the drawings to the utility model embodiment, of the present utility model above-mentioned and other mesh
, feature and advantage will be apparent from, in the accompanying drawings：
Fig. 1 is the overall structure diagram of the loading device in the application；
Fig. 2 is the A portions enlarged drawing in Fig. 1；
Fig. 3 is the B portions enlarged drawing in Fig. 1；
Fig. 4 is the hydraulic cylinder overall structure diagram in the application；
Fig. 5 is the C portions enlarged drawing in Fig. 1 (in order to clearer, the locating dowel 41 in Fig. 1 is removed).
Specific embodiment
The utility model is described below based on embodiment, but the utility model is not restricted to these implementations
Example.
Load charger in the application, the loading device particular with force snesor is used to apply object to be measured
Load, such as bridge static loading test machine, large tonnage pressing machine and bridge stretching machine etc..As shown in figure 1, the loading dress in the application
Put including loading main body 1 and force snesor 2, the force snesor 2 is arranged in loading main body 1, for measuring loading main body 1 institute
The magnitude of load of applying.The loading main body can be hydraulic cylinder or other force application structure, such as mechanical transmission structure etc.,
Wherein it is preferably hydraulic cylinder 10.The hydraulic cylinder 10 includes cylinder body 11 and piston 12, and the piston 12 includes piston only 121
With piston rod 122.The piston only 121 can reciprocatingly slide in the interior inside along cylinder body 11 of cylinder body 11, so that piston
Bar 122 can be moved back and forth, to object imposed load to be measured.
As shown in Figure 1-2, the force snesor 2 be great force value, column sensor, including sensor elastomer 21 and plus
Pad 22 is carried, the loading pad 22 is arranged on one end of elastomer 21.One end of the loading pad 22 coordinates with the elastomer 21,
Other end is loading force side, with object contact to be measured such that it is able to which the loading force that will be loaded on object to be measured is directly passed
It is delivered on elastomer 21, the size of loading force is measured by detecting the elastic deformation of elastomer 21.The other end of end face
Plane is preferably formed into, is easy to the stable delivery of power.
The elastomer 21 is column, including first end and the second relative end.In a preferred embodiment, in bullet
The first end of gonosome 21 is provided with the first mating surface 211, and the contact jaw of the mating surface 211 of loading pad 22 and first is provided with second
Mating surface 221, the elastomer 21 and loading pad are caused by the cooperation of the mating surface 221 of first mating surface 211 and second
Good power transmission can be realized between 22.Preferably, the mating surface 221 of first mating surface 211 and second is mating spherical surfaces.
Wherein it is possible to be that the first mating surface 211 is convex spherical, the second mating surface 221 is corresponding concave spherical surface, as shown in Figure 1-2.
Can be concave spherical surface with the first mating surface 211, the second mating surface 221 is convex spherical, can realize identical function.So, lead to
Cross and the first mating surface 211 and the second mating surface 221 are set to mating spherical surfaces, it is possible to achieve between elastomer 21 and loading pad 22
Adjust automatically when power is transmitted, for example, when loading force is present in addition to the main load with the diameter parallel of elastomer 21, also in the presence of it
During his partial load, appropriate adjustment can be carried out between the loading pad 22 and elastomer 21, it is inclined in loading process to overcome
Mental and physical efforts so that Impact direction will not change, do not interfere with the normal work of elastomer 21.
As shown in figure 4, in a preferred embodiment, fluted 123, institute are set in the free end of the piston rod 122
The one end for stating force snesor 2 is arranged in the groove 123.Specifically, the second end of the elastomer 21 is arranged on described recessed
In groove 123.Preferably, the second end end face of the elastomer 21 is plane, and the groove bottom 1231 of the groove 123 is also flat
, so easily can be delivered to the power of hydraulic cylinder 10 on elastomer 21 such that it is able to be delivered to by loading pad 22 to be measured by face
On object, to object imposed load power to be measured, while detecting the size of loading force by the elastic deformation of elastomer 21.The bullet
The ratio between length L and diameter D of gonosome 21 are preferably L/D>2, can so reach the size requirement of high-precision force post sensor.By
In setting fluted 123 in the free end of piston rod 122, a part for force snesor 2 is put into the groove 123, that is, can guarantee that
The size of great force value force snesor meets required precision, and does not increase the overall volume of equipment, and original system need not be made any
Transform, not the stability of influence power system, the high-precision intelligent force control system that can be stablized.Meanwhile, force snesor
The size of the direct detection loading force of elastomer 21, high precision accurate to the measurement of loading force.Preferably, by the big of force snesor 2
It is partially submerged into the groove 123 on the piston rod 122, forced contact can be reduced highly, is not take up the height space of system
And simple structure.
As shown in Figure 1-2, in a preferred embodiment, bullet described in insertion is formed with the axis of the elastomer 21
The through hole 212 of gonosome axial direction, the preferably cylindrical through hole of the through hole 212, its diameter of section is preferably 30-40mm.By setting
Put the through hole 212 so that when elastomer 21 quenches in process, the quenching wall thickness of elastomer 21 can be reduced so that bullet
The quenching result of gonosome 21 is more uniform, greatly improves the accuracy of manufacture, service behaviour and the working life of elastomer.
As shown in Figure 1-2, it is preferable that near the end of the elastomer 21 first end in the through hole 212, that is,
One end that through hole 212 is engaged with loading pad 22 is provided with fixed structure 3, and the fixed structure is used for loading pad 22 is provisionally solid
It is scheduled on the elastomer 21, can prevents loading pad 22 from arbitrarily departing from the elastomer 21, causes the loss of loading pad 22.
As Figure 2-3, in a preferred embodiment, the fixed structure 3 includes snib 31 and card 32, the card
Bolt 31 includes snib first 311 and snib post 312.The snib first 311 and snib post 312 are preferably cylinder, and both are in axial direction
On be sequentially connected, the diameter with diameter greater than the snib post 312 of the snib first 311, but straight less than the through hole 212
Footpath.The corresponding position of the through hole 212 is provided with patchhole 222 in the loading pad 22.Preferably, the patchhole
It is to be threadedly coupled between 222 and the snib post 312.The card 32 is shim-like, and its external diameter is more than the snib first 311
External diameter, its internal diameter is more than the external diameter of the snib post 312, and the card 32 is set in the end of snib first 311 and loading pad 22
Between snib post 312 on, and in the through hole 212.Gap is formed between the card 32 and snib post 312 to coordinate,
Gap between the two is preferably 4-5mm；It is interference fit between the card 32 and through hole 212, but the magnitude of interference should not be too big,
Enable to easily take out the snib 31 and card 32 from the through hole 212.In the card 32 and snib post
Set between 312 and coordinated than larger gap, so, in the case where there is partial load, when the loading pad 22 is produced necessarily
Skew, snib 31 with loading pad 22 with hour offset when, card 32 will not be to the movement of snib 31 and then to loading pad 22
It is mobile to produce interference, improve the applicability of load charger.By the interference fit between the card 32 and through hole 212
Can enable that the card 32 is maintained at fixed position, so as to loading pad 22 and elastomer 21 are temporarily affixed into one
Rise.When needing to remove loading pad 22, as long as the loading pad 22 is upturned, overcome between card 32 and through hole 212
The adhesion of less interference fit, so that it may easily remove loading pad 22, will not destroy loading pad 22 and elastomer 21
Structure and attachment structure between the two, facilitate easy to operate.
As illustrated in fig. 1, it is preferred that assembling of the elastomer 21 in piston rod 122 for convenience, the elastomer 21 is set
For stepped, in the groove 123 of piston rod 122 described in the partial insertion of its medium and small external diameter, the part of big external diameter is exposed described recessed
Groove 123, can so facilitate the assembling of force snesor 2 in the case where certainty of measurement is ensured.
In a preferred embodiment, in order to be supported to elastomer 21 so that elastomer 21 is at good
Stress, supporting construction 1232 is provided with the groove 123 near the position of notch, and the supporting construction 1232 is preferably
Support ring (referring to Fig. 4).The support ring can play guiding and supporting role, and when there is unbalance loading, support ring can support described
The external cylindrical surface of elastomer 21.Meanwhile, the supporting construction 1232 can also cause the outer wall and groove 123 in the elastomer 21
Certain gap is formed between the wall of side, for example, the gap of 1mm or so is formed, so, when elastomer 21 is produced in the presence of load
During raw Light deformation, the side wall of groove 123 will not produce interference to the deformation of elastomer 21, can be effectively increased the spirit of elastomer 21
Sensitivity, improves accuracy of detection.
As shown in Figure 4, Figure 5, in a preferred embodiment, in order to be accurately positioned to elastomer 21 so that depositing
Be partial to load when, elastomer 21 will not transverse shift, be provided with positioner between the elastomer 21 and piston rod 122
4.The positioner 4 includes locating dowel 41, on the bottom land of the groove 123, offers and relative with the through hole 212 determines
Position hole 1233.The diameter of the location hole 1233 is slightly smaller than the diameter of the through hole 212.The location hole 1233 is preferably blind
Hole, length of its hole depth less than the locating dowel 41.After assembling, the part of the locating dowel 41 is located at the location hole 1233
It is interior, interference fit is formed between the part and the location hole 1233, the magnitude of interference is 0.02mm or so；Another part is located at institute
State in through hole 212, gap is formed between the part and the through hole 212 and is coordinated, gap value is 0.1mm or so.So, locating dowel
41 can form accurately positioning to the elastomer 21, while also very convenient by the elastomer 21 from the locating dowel 41
On remove, the structure of the elastomer 21 will not be destroyed.Unsuitable long, the preferably 5-10mm of the length of the room post 41, this
Sample can not influence the cooperation between elastomer 21 and groove 123 while positioning is realized.
As shown in Figure 1-2, it is preferable that be provided with the side wall of the part for exposing the groove 123 in the elastomer 21
Adapter 5, the detection data for generating and transmitting elastomer 21.In order to detect the misalignment of elastomer 21, described suitable
Displacement transducer 6 is provided with orchestration 5, institute's displacement sensors are preferably rope sensor, the drawstring of the rope sensor
One end be arranged on adapter 5, other end is arranged on the piston/cylinder 11, is preferably provided at cylinder body 11 suitable with described
On the relative surface of orchestration.So, when the elastomer 21 is moved back and forth with the piston rod 122, can be passed by the displacement
Sensor 6 is conveniently detected piston rod 122, the situation of movement of elastomer 21 and their shift position；Simultaneously, moreover it is possible to monitor
Speed and deformation when power ties up to stress, in the intelligent force control system of the application, realize dual control.
Loading device in the application also includes controller, for the force value measured according to force snesor 2 and wants to reach
Power desired value adjust hydraulic cylinder 10 the course of work, for example adjust hydraulic cylinder 10 hydraulic oil pressure and flow.
In the application, by original forced contact face by moving down into the bottom of piston rod groove at the top of piston, pass power
The major part of sensor is embedded in the inside grooves of piston rod, and only the adapter of sensor is exposed outside with the sphere part at top
Face, has reached and can guarantee that the size of great force value force snesor meets required precision, and does not increase the overall volume of equipment, not shadow
Ring the purpose of the stability of power system.
For the ease of description, placed vertically with hydraulic cylinder 10 below, the free end of piston rod 122 placement side upward
Formula is illustrated to the course of work of the load device in the application.The course of work of the loading device in the application is：Start
Device, the lower hydraulic fluid port oil-feed of hydraulic cylinder 10 promotes piston 12, and piston 12 promotes the together motion upwards of force snesor 2, when power sensing
Loading pad 22 above device 2 with contacted by the entablature of Force system (object to be measured) after overall stress, force snesor 2 will be suffered
Power is transferred to control system, and hydraulic cylinder 10 is controlled according to the size of force value by control system, such as in control hydraulic cylinder 10
The pressure and flow of hydraulic oil, pressurizeed according to technological requirement, pressurize, decompression, the operation such as oil return, complete whole operation mistake
Journey.
By the way of force snesor is detected and feedback exerts a force, output force value is loading device to loading device in the application
Be stressed directly value, numerical value reliability, error is small.Realize pressure system intelligence numerical value collection feedback control.Force main body uses liquid
Compressing cylinder exerts a force, and stress stabilization, pressure is high, does not have External force interference, and simple structure is easy to operate.According to the spy of force snesor
Point, the major part of force snesor is embedded in the piston 12 of hydraulic cylinder 10, by the contact surface reduction of piston 12 and force snesor 2
To the bottom of piston rod 122, pressure interface is reduced, that is, ensure that the requirement dimensionally of large-tonnage force snesor, but it is simple
The structure of total system is changed, has reduced because of the space shared by force snesor.Just force snesor is designed to receive in the application
The length/diameter of power body (elastomer 21)>2 shape, according to the characteristics of stress and large-tonnage force snesor, can simplify
The structure of force snesor, substantially reduces the material cost of sensor, improves precision.Column force snesor in the application, receives
Rationally, its top design, with loading pad of the unification with male female sphere, forms a pair of sphere pressure pairs to power into convex/concave spherical surface,
Can automatic adjustment contact direction when stress support is deformed.The application has installed a set of position additional in the adapter of force snesor
Displacement sensor 6, one end of the displacement transducer 6 is arranged in box adapter, and the other end is connected with piston/cylinder 11, works as hydraulic cylinder
When 10 drive force snesors 2 rise, displacement transducer 6 also measures corresponding displacement simultaneously by drawstring, coordinates control system, reaches
To force snesor and the effect of displacement transducer dual control.
It should be noted that in present specification, the relational terms of such as " first ", " second " etc be used merely to by
Certain entity or operation are distinguished with another entity or operation, and are not necessarily required or implied these entities or deposited between operating
In any this actual relation or order.In addition, term " including ", "comprising" or its any other variant be intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements being not expressly set out can be included, or can also include being this process, method, article
Or the intrinsic key element of equipment.Unless otherwise defined, technology used herein and scientific terminology with it is of the present utility model
The implication that those skilled in the art are generally understood that is identical.Term used herein is intended merely to describe specifically to implement mesh
, it is not intended that limitation the utility model.Terms such as herein presented " parts " can both represent single part,
The combination of multiple parts can be represented.Terms such as herein presented " installations ", " setting " can both represent a part
It is attached directly to another part, it is also possible to represent that a part is attached to another part by middleware.Herein one
Feature described in individual implementation method can in combination be applied to another implementation method individually or with further feature, unless should
Feature is not applied to or is otherwise noted in another implementation method.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this area
For technical staff, the utility model can have various changes and change.All institutes within spirit of the present utility model and principle
Any modification, equivalent substitution and improvements of work etc., should be included within protection domain of the present utility model.
Claims (14)
1. a kind of load charger, including loading main body and force snesor, the force snesor are connected with the loading main body
Connect, wherein, the loading main body is force application part, and the force snesor is used to detect the size of the loading main body force, its
It is characterised by, a part for the force snesor is arranged on the loading body interior.
2. load charger according to claim 1, it is characterised in that the loading main body is hydraulic cylinder, the liquid
Cylinder pressure includes cylinder body and piston, and the piston includes piston only and piston rod, is provided with the free end of the piston rod recessed
Groove a, part for the force snesor is arranged in the groove.
3. load charger according to claim 2, it is characterised in that the force snesor is axially longer column
Formula sensor, the lower surface of the column sensor contacts with the bottom land of the groove.
4. the load charger according to Claims 2 or 3, it is characterised in that the force snesor include elastomer and
Loading pad, the loading pad is arranged on one end of elastomer；One end of the loading pad coordinates with the elastomer, other end
It is load force side.
5. load charger according to claim 4, it is characterised in that the elastomer is column, including first
End and the second relative end, are provided with the first mating surface, in loading pad contact with the first mating surface in the first end of elastomer
End is provided with the second mating surface, and first mating surface and the second mating surface are mating spherical surfaces.
6. load charger according to claim 4, it is characterised in that be formed with the axis of the elastomer and passed through
The through hole of the logical elastomer axial direction.
7. load charger according to claim 6, it is characterised in that near the elastomer the in the through hole
The end of one end, is provided with fixed structure.
8. load charger according to claim 7, it is characterised in that
Position corresponding with the through hole is provided with patchhole in the loading pad；
The fixed structure includes snib and card；
The snib includes the snib head and snib post that are connected with each other, for screw thread connects between the patchhole and the snib post
Connect, the snib head and card are located in the through hole, and the snib post is screwed in the patchhole after passing through the card.
9. load charger according to claim 8, it is characterised in that to match somebody with somebody in gap between the snib post and card
Close, and/or, it is interference fit between the card and through hole.
10. load charger according to claim 6, it is characterised in that between the force snesor and piston rod
It is provided with positioner.
11. load chargers according to claim 10, it is characterised in that
The location hole relative with the through hole is offered on the bottom land of the groove, the positioner includes locating dowel, institute
The part for stating locating dowel is located in the location hole, and a part is located in the through hole.
12. load charger according to Claims 2 or 3, it is characterised in that in the groove near the position of notch
It is provided with supporting construction.
13. load charger according to Claims 2 or 3, it is characterised in that expose in the force snesor described recessed
Adapter is provided with the side wall of the part of groove.
14. load chargers according to claim 13, it is characterised in that displacement biography is provided with the adapter
Sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621314128.6U CN206280328U (en) | 2016-12-02 | 2016-12-02 | Load charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621314128.6U CN206280328U (en) | 2016-12-02 | 2016-12-02 | Load charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206280328U true CN206280328U (en) | 2017-06-27 |
Family
ID=59074928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621314128.6U Expired - Fee Related CN206280328U (en) | 2016-12-02 | 2016-12-02 | Load charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206280328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481618A (en) * | 2016-12-02 | 2017-03-08 | 北京良安欣电技术开发中心 | Load charger |
-
2016
- 2016-12-02 CN CN201621314128.6U patent/CN206280328U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481618A (en) * | 2016-12-02 | 2017-03-08 | 北京良安欣电技术开发中心 | Load charger |
| CN106481618B (en) * | 2016-12-02 | 2018-08-28 | 北京良安欣电技术开发中心 | Load charger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104280158B (en) | A kind of multilamellar force value sensor for tensile testing machine and measuring method thereof | |
| CN203811094U (en) | An engine air cylinder cap seat ring conical surface depth detection apparatus | |
| CN108168488A (en) | A kind of detection device of contact drilling quality | |
| CN106871846A (en) | The online direct measuring method of negative clearance when a kind of hub-bearing unit riveted is assembled | |
| CN206470002U (en) | Force snesor | |
| CN109113789A (en) | Press multidirectional monitoring that can position drilling hole stress sensor in ground | |
| CN108680437A (en) | Power battery aluminum casing pressure expansion mechanics detects frock | |
| CN206280328U (en) | Load charger | |
| CN102778352B (en) | Magnitude of interference detection system, magnitude of interference detection method | |
| CN106481618B (en) | Load charger | |
| CN206593974U (en) | A kind of boring elastic modulus instrument probe | |
| CN208840838U (en) | For the press fitting of engine spindle Front oil seal and displacement sensor gradient device | |
| CN204479218U (en) | A kind of ground pressure sensor based on three dimensions monitoring | |
| CN109975105A (en) | A kind of plate thickness detected automatically is to resistance of deformation test mould | |
| CN211317165U (en) | Engine connecting rod hole center distance measuring device | |
| CN209145644U (en) | Press multidirectional monitoring that can position drilling hole stress sensor in ground | |
| CN213925835U (en) | Vertical force measuring support with replaceable force measuring element | |
| CN108225754B (en) | Testing device for checking accuracy of pulling and pressing test frame of petroleum downhole tool | |
| CN204389075U (en) | A kind of multilayer force value sensor for tension tester | |
| CN207623006U (en) | A kind of test device for checking Petroleum Down-hole Tool tensile compression test frame precision | |
| CN110375893A (en) | The dual-purpose tensiometer of Double decker piston formula tension and compression | |
| CN205679186U (en) | A kind of stroking mechanism displacement detector | |
| CN204789107U (en) | A device for measuring rock mass mechanics parameter | |
| CN108398205A (en) | The graduation apparatus of tension nipple | |
| RU2230904C2 (en) | Device for determining properties of rock in wells of contour-adjacent excavations massive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170627 Termination date: 20191202 |